Can obesity impact mesh exposure rate after mid-urethral sling operation? Medium term follow-up.

OBJECTIVE: To study mesh exposure rates among obese (BMI ≥ 30 kg/m2) vs non-obese women after mid-urethral sling (MUS) operation. STUDY DESIGN: This retrospective cohort study included all patients who underwent MUS surgery for stress urinary incontinence April 2014-April 2021 in a tertiary-level university hospital. Data from obese and non-obese patients were compared. RESULTS: A total of 120 (41 %) obese patients and 172 (59 %) non-obese patients who had mid-urethral sling surgery were compared. Of the cohort, 265 (90.7 %) underwent TVT-obturator, 15 (5.1 %) mini-sling TVT, and 12 (4.1 %) retro-pubic TVT. Diabetes mellitus was significantly more prevalent in the obese group (p =.01), without other demographic differences. Mesh post-operative exposure rate was 5.4 % during the study. The obese group had lower incidence of mesh exposure than the non-obese group (1.6 % vs 8.1 % respectively, p =.018). Mean follow-up was 51 months (range 8-87 months) without significant differences between groups (49.9 ± 21.2 vs 51.5 ± 22.3, p =.548). Pelvic organ prolapse, cystocele, and rectocele stages were significantly higher in non-obese patients. Similar numbers of post-menopausal women were in each group. CONCLUSION: This follow-up after MUS surgery showed an association between obesity and lower rate of mesh exposure. Further research is needed to evaluate correlations between estrogen and mesh exposure.

Comparison of subjective long-term follow-up after mid-urethral sling in obese and non-obese patients.

OBJECTIVE: Obesity is a key factor for stress urinary incontinence. Our aim was to evaluate the long-term, subjective surgical satisfaction rate among obese (BMI ≥ 30) women after mid-urethral sling (MUS) procedure in a tertiary-level university hospital. STUDY DESIGN: This retrospective, case-control study compared the outcomes of obese and non-obese patients who underwent MUS surgery for stress urinary incontinence (SUI), March 2014-January 2020. Patients were followed-up using Urogenital Distress Inventory-6 (UDI-6) and Patient Global Impression of Improvement (PGI-I) telephone questionnaires. RESULTS: Among 264 patients who had MUS surgery, 107 (40.6%) patients with BMI ≥ 30 kg/m2 were matched with 157 (59.4%) non-obese patients (BMI < 30 kg/m2). Mean follow-up was 41.4 (8-73) months. Obese women had higher post-operative urinary symptom scores in UDI-6 (32.3 vs. 25.7, p =.015) and PGI-I questionnaires (2.9 ± 1.7 vs. 2.3 ± 1.7, p =.03). More patients in the obese group (p =.03) had urinary stress symptoms. Subjective failures (PGI-I ≥ 4) totaled 46 (17.4%), 18 in obese and 28 in non-obese patients, giving cure rates of 83.2% and 82.2%, respectively (p = 1). CONCLUSION: Although obese patients had higher UDI-6 scores, an interpretation of this score did not show an increase in distress due to urinary incontinence symptoms (>33.33 points).